Indicator.



N. G. LOCKE.,

l INDICATOR.

APPLIGATIGN MLED Muzo. 1911..

, i LW, Patented sep-n.1?,1912- s sums-SHEET 1.

. mm-wwmwm, w f Ww Gnome INDICATOR. APPLICATION FILED MAY 2o. 1911.`

, Pawnted Sept. 17, 1912.

3 SHEETS-SHEET 2.

N. c. LOCKE.

INDIoAToB. APPLIOATION FILED MAY 20. 1911.

Patented Sept. 17, 1912.

y To' clliwhom t may concern.'

Yio

NATHNIEL G. LOCKEL 0F SALEM, MSQCHUSTTS,

ASSGNOR OF TWG-THRDS T THBKS FRENCH, 0F RMORD, MAINE;

l 'y inmensos.

Specification Letters Patent.

1itlatented Sept. t7, i912.

Appelation-sied may ao, iaii. aerialno. scarse..

l, Be it known that l, NA'rHAnInL C. Locus, of Salem, Essex county, Massachusetts, have invented a new anduseful improvement. in Indicators, of which the following is a full, clear, and exact description.

My invention relates to the manufacture of paper and. is intended to furnish a device by which ,it is possible to determine the thickness and weightlof paper duringv the process of manuactiire.' j

.ln the ordinary process oj making paper a sheet is tested; fr thiclmessand weight after having been` y.caltendered, 'a Vsmall 'piece of the paper cut out and weighed to sce how it isjrunn'ing through the.i machine.

` Urder the present means the weight can only be determined after the paper has been "ncalendered, .In the device embodied in my 'invention Ts ply two rollers, one of which is movable ra ially in respect to the other.

This rolli'" is su ported on a diaphragm Y above a mercury c amber which is connected to' a glass indicating tube, so that the exact 'distance between the two rollers will be indicated at once in the tube. -`When the two rollersare in contact the mercur. will stand at zero in the tube. It is inten ed that this device' shall bei attached toy the so-called sprincf'roll of a 'paper machine, although it may e placed in any yother suitable orde-v sired Ipositihn on the machine. ,f

By placiu'g the indicator y'comprisfni in my invention on each edge of the sheet of paper as it is passing through the machine, it is apparent thatl any variation in the thickness of the paper asfit passes between the two' rollsavill be shown at once in an exaggeated way by the ,mercury rising' or falling lin the glass tube.

Reference is to be had to the accompanyi ing drawings forming a part ot this specilication, in which similar reference characters indicate corresponding parts in all the views, ,v

Figure 1 is a side view of the apparatus comprising my invention, partly in cross section.' Fig. 2 isa sectional front view of the same, and Fig. 3 is asectional frontview of the device as applied to a paper making machine. t

In the drawings have indicated at' S 4a roll which is supported. on two concentric journals l( 'and L, which are secured to the4 for the shaft B. This sha-tt B carries a collar C rigidly secured thereto by the pin C1. The upper part of the frame or collar C supports a diaphragm chamber A, said diaphragm chamber A carrying on its top a diaphragm D held in place by a ring E by' any other desired means. The collar (l has an upward extending arm F which supports two horizontal springs M and M1. Secured to the surface of the diaphragm D is a frame N, the lower surface of 'which is slightly convex; This trame N carries the roll R which,is supported on the shaft Vv'. This trame N andthe roll R are supported against the roller S by the horizontal siringa M and M1. I provide a screw nut so that the upward pressure of the spring M may be regulated.

The mercury chamber below the diaphragm is connected by a tube V to a glass tubel" which may be graduated in any deroller H will be indicated at onceon the scale T. Vhen there is no paper running between the rollers and they are. in contact, it is intended that yhe mercury in the tube '.l shall sta-nd at zer.

In order thatthe roll R may be swung out-of position and con act with the roll S when the paper breaks o for any other reason it is necessary to adjust it in relation to the rolls of `the paper making machine, I provide a slotted. segment Q which is rigidly secured to the end of the shaft B by the pin B1. Itis apparent that when the lower roller and its support are revolved with the shaft B, the segment Q which is supported on the arm G1 will allow the shaftto revolve a partiaLturn and to he brought back again into exactly 'the same position that it was in relation lto the roll S.-

Instead of using mercury it is apparent that any other colored iuid such as colored alcohol may he used to the same effect.

My invention therefore comprises a device very simpleinv construction. which may be used in. the manufacture of ipaper whereby the thickness of the paper 'celere it is calendered Will be. indicated to the operator, and one in which the indicating roll and its support may be swung out of position so that the paper may be easily and quickly repaired or replaced in the rolls of the paper making machine..

Vhile the most practical. Way of applying my indicator is to use the opposed rollers S and R, still it Will be readily linden stood that there might be other equivalent abutting surfaces which would not interfere with the running of the paper, and the result would be the same.

l. An indicator comprising a rotatable cylinder, a second cylinder, spring means normally holding the second cylinder in pe,- ripheral Contact with the former,n1eans connected with the lCat-ter indicating any motion of thesecond cylin er radially in relation to the first cylinder, and means connected with one of the cylinders to swing it out of and into peripheral Contact with the other.

2.- An indicator comprising a rotatable cylinder, a shaft rigidly supported in relation to said cylinder, a frame supported on the shaft and rotatable thereon, a diaphragm carried on the frame, a second maarre rotatable cylinder supported on the diaF phragm, spring means carried on the frame to hold the second cylinder in peripheral Contact With the rst cylinder, and means for rotating the frame and the shaft, thereby moving the second cylinder out of and into peripheral contact- With the first cylinder. y

3. An indicator comprising a. rotatable fra-me, a. diaphragm on the traine, a rotatable cylinder on the diaphragm, a second rotatable cylinder, spring' connection between the iframe and theli'irst cylinder to hold the cylinder normally in peripheral Contact with the second cylinder, and means connected'with the diaphragm to indicate any radial movement of the irstylinder in relation to the second cylinder.

Y fl. An indicator comprising two rolls, a

movable support for the first roll, spring means'norrnally holding the first roll in peripheral contact with the second roll, a diaphragm engaging the support of the rst roll, and means connected with the diaphragm indicating any niet-ion of said roll radiallyA in'relation to the-other roll.

5. n indicator comprising two rotatable rollsflexibly supported in peripheral con,- tact, means for swinging one of the rolls erally out of and into peripheral coiltalit With-'the other, and means connected with one of the rolls indicating any radial movement of the rolls in relation to each other.

. NATHANEL C. LOCKE. vWitnesses:

FRANK E. Loom, HARnInT M. Fira. 

